Symbol typing and tape feeding mechanism for typewriting machines



Aug. 28,1951

Filed Aug. 10, 1946 C. SYMBOL TYPING w. NO'RTON ET AL FOR TYPEWRITING MACHINES FIG.I

AND TAPE FEEDING MECHANISM l7 Sheets-Sheet l INVENTORS CHARLES W. NORTON o/ JOHN H. R/Tz THEIR ATTORNEYS A g- 28, 1 w. NORTON ET 2,565,985

C. SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet 2 FIG. 2 .NVENTOFQS CHARLES 14 NORTON BY and JOHN H- RITZ THEIR ATTORNEYS Aug. 28, 1951 c. w. NORTON ET AL 2,565,985 SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet 5 THEIR ATTORNEYS g- 1951 c. w. NORTON ET AL SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES l'7'SheetsSheet 4 Filed Aug. 10, 1946 IIIIIIII INVENTORS Can/ass MK A/oRw/v and Jon/v. R/TZ 0% THE l ATTORNEYS Aug. 28 1951 c w. IQORTbN ET AL 2,565,985

SYMBOL. TYPJ ING AND TAPE FEEDING MECHANISM J FOR TYPEWRITING MACHINES 7 Filed Aug. 10, 1946 l7 Sheets-Sheet 5.

T EIR ATTORNEYS Aug. 28, 1951 c N\V,ANORTQN ETA 2,565,985

SYMBOL TYPI ND TAPE FEEDING CHANIS FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 I 17 Sheets-Sheet e INVENTORS CHARL E5 14 IVORTOIV J If. R T BY and CNN I Z QM K141 v wn THEIR ATTORNEYS g- 1951 c. w. NORTON ET AL 2,565,985

SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet 7 INVENTORS CHARLES h. A/ORTO/V BYanJ Joy/v R172 W THEIR ATTORNEYS Aug. 28, 1951 NORTON ETAL 2,565,985

C. W. SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES 1 Filed Aug. 10, 1946 17 Sheets-Sheet 8 IEZIGJSIZO C lNVENTnO/Ri F IG.|8 BY A1373 THEIR ATTORNEYS Aug. 28, 1951 Filed Aug. 10, 1946 4 c. w. NORTON ET AL 2,565,985 SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES I 7 l7 SheetsSheet 9 l lugslmm INVENTORS 0mm. ES W. No? row F I BY and JOHN l5. RITZ a) r'u l i R ATTORNEYS c. w; NORTON SYMBOL TYPING AND TAPE FEE ET AL 2,565,985 DING MEC FOR TYPEWRITING MACHINES HANISM Aug. 28 1951 17 Sheets-Sheet 10 Filed Aug. 10, 1946 Aug. 28, 1951 x c w NORTON AL 2,565,985

SYMBOL TYPI'NG AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 l7 Sheets-Sheet ll lllllll m l llhlllllllllllllll! llm lliVEP-ETO RS CHARLES W. Aoxerazv BY and JOHN H. R/Tz THEIR ATTORNEYS Aug. 28, 1951 c. w. NORTON ET AL 2,555,985

SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet 12 C luvzfia' bzs N 0 TO BY effi y H 757-2 HEIR ATTORNEYS Aug. 28, 1951 c. w. NORTON IEI'AL 2,555,935

SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES I Filed Aug. 10, 1946 a 17 Sheets-Sheet 15 CHARLES W. A/aRm/v BY and JOHN H. RITZ r w y; p

THEIR ATTORNEYS 3, 1951 w NORTON ET AL 2,565,985

C. SYMBOL TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES (/MRLES 14 JVaR-m/v a M MM H'EIR ATTORNEYS and JOHN H. R172 Aug. 28, 1951- c. w. NORTON ETAL 2,565,985

SYMBOL TYPING AND TAPE FEEDING MECHANISM I FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 v 17 Sheets-Sheet 15 BY 02% X441 W HEIR ATTORNEYS Aug. 28, 1951 c. WJNORTON ET AL 2,565,985

- SYMBOL. TYPING AND TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet l6 wmdE MN yaw INVENTORS MwN Ema

CHARLES W. NoRTo/v BY anc/ JOHN fl. Rrrz y PM THEIR ATTORNEYS g- 15951 c w. NORTON ET AL 2,565,985

SYMBOL TYPJ ING AND -TAPE FEEDING MECHANISM FOR TYPEWRITING MACHINES Filed Aug. 10, 1946 17 Sheets-Sheet 17 FIG.40

C lNVENTgR/i HARLES okra/v anc/ JoH/v R/Tz TH E IR ATTORNEYS Patented Aug. 28, 195i NT OFFICE SYMBOL TYPIN G AND TAPE FEEDING MECH- ANISM FOR TYPEWRITING MACHIN ES Charles W. Norton, West Orange, N. J and John H. R/itz, Huntington, N. Y., assignors to Ralph C. Coxhead' Corporation, New York, N. Y., a

corporation of Delaware Application August 10, 1946, Serial No. 689,754

16 Claims. (Cl. 19749) This invention relates to' typewriting machines designed for typing messages in generally linear symbols of varying lengths, such as dot-and-dash symbols of the telegraphic code, the typed messages being primarily intended to be used in the transmission of such messages. The invention is embodied for purposes of description in the machine known in the art as the Varityper, wherein the printing type is embossed upon the shuttle movable over a circular anvil, a pigment ribbon being passed between the shuttle and the material to be printed upon, and the material to be printed upon being forced against the ribbonand type by a stroke from a printing hammer. It embodies a structure whereby a strip or tape of paper or other material is fedupward past the printing point of the machine, the printed message being delivered as a continuous tape. It also provides novel structure to meet the particular demands incident to the use of such symbols in a typewriter. r I

Inasmuch as the printed tape is customarily used subsequently for transmission of code messages by means of photoelectric or similar equipment, the typed symbols must be accurately and uniformly spaced on the tape in order to assure accurate transmission of the message printed thereon. This invention is directed to a typewriting machine capable of producing a tape s'atis factory for such purpose.

It is an object of the invention to adapt a typewriter:mechanism to the typing of messages in linear symbols of varying lengths, such: as telegraphic code symbols of the dot-and-dash character. v u I Another object of the invention is to maintain the message tape in an accurate position relative to the printing point.

Another object of the invention'is to assure accurate location of the printed characters relative to the tape upon which the message is printed, and to obtain accurate spacing of the symbols relative to each other along the tape, having due regard to the length of the symbols.

Another object of the invention is to regulate the feeding of the tape past theprinting point to conform to the lengthof the various symbols or groups of dots and dashes and to the spacing between words and sentences in order to assure correct translation of the transmitted message, variable spacings between letters, words, and

sentences being material elements in the translation of the message.

,. Another object of the invention is to provide novel means to shift the tvne uoon operation of feeding the tape and carbon ribbon being motoractuated.

Another object of the invention is to provide a novel cyclic operating mechanism for a typewriter or the like whereby, upon operation of the printing key or of the space bar, a single rotation of the driving shaft effects all the movements and functions of the machine thereby de-- 20 termined.

A further object of the invention is to provide an improved clutch for a business machine which is adapted to be automatically disengaged from a driven shaft after having imparted a single ro-' tation thereto;

Still further objects and advantages of the invention will appear as the description proceeds.

Our invention is defined in the appended claims, In the claims, as well as in the description, parts are identified by specific names for convenience, but such nomenclature is intended to be as generic, in its application to similar parts, as the prior art will permit. The words printing and printed are used in the claims in their broad sense of imprinting or marking, including marking with pigment and marking by embossing, indenting or perforating. The best form in which we have contemplated applying our invention is illustrated in the accompanying diagrammatic drawings forming part of this specification, in which:

Fig. l is a top plan view of the code writing machine, having parts omitted and other parts broken away to show the general arrangement of the operating parts.

Fig. 2 is a plan and sectional view of the typewriter, being a portion of the view in section takenv generally on the line 2-2 of Fig. 3'7.

Fig. 3 is a vertical section through the typeselecting device, taken in general on line 3-3 of Fig. l. I

Fig. 4 is a schematic view of the keyboard.

Fig. 5 is an elevation of the shuttle shifting mechanism viewed from the left side of Fig. 1,

its

nartlv in sentinn taken omnm'allv n 1i s s nf' Fig. 8 is an elevational view of the shuttle-,

shifting yoke shown in plan in Fig. 11.

Fig. 9 is a, sectional view of the shuttle-shifting yoke taken in general on line SIT-90f Fig. 8, show' ing the pivotal connection of the shiftingupinion to the yoke, and showing in dot-and-dashflines the pinion positioned in the yoke.

Fig. 10 is a detail plan view of mechanism for operating the shifting pinion.

Fig. 11 is a similar view of the parts shown in Fig. 10 and related parts operated thereby, different operating position.

Fig. 12 is a detailed elevational view from the rear of the machine showing the shuttle and type locking device whereby the type is locked at the printing point during the'printing operation.

g. 13. is a deta d ct ona ew oi; e im v locking device on the line l 3l-i3 of Fig.1.).

Fig. 14. is a right-side'elevational view of the p t h mm r op ra in mec anis nd. t

means for feeding the message tape past the pr nt point l5 and lfi aredetailed views of the feed 1 s for as in hem ssae i t as he. pr n ing point.

Fig. 171s a detailed view of one of the guide roll ers fo'r the tape feedingme'chanism.

,' Fig. 18, is a front elevation. partly in section, of

the mechanism for feeding theimessagetape past the printingpoint, and showing the type locking device.

Fig." 19 is a right-side elevational view, of,,the.

mechanis m for stopping the drivingsh-aft at a' definite angular position;

Fig. 20 isa rear elevation of the variablergear- 111 f d ethe e sa e ta e.

Fig. 21 is a sectional view of the va iiable gearing taken in general on the line 2l- .2l of Fig. 20. Fig. 22, is. a perspective view of a mutilated gear constituting a part of the variable gearing shown in'FigLZOI "Fig. 23 is a perspective view of another mutilat ed gear for cooperation with that shown in Fig. 22 Fig. 24 is a schematic development showing the cooperation of. themutilated gea'rs of Figs. 22

view of the means for shifting the mutilated gears on the driving shaft.

Fig. 26 is a side view of a part of the mechanism ii-Fi ..Dar 1y in ecti n taken n e ra on 1in Zi6 5 of Fig. 27 is a detail view of the lock for holding the. mutilated gears in place after adjustment.

Fig. 28 is a detail view of the structure by which, the mutilated gears are, biased. to normally inactive position.

Fig. 29-is a plan view showing the lower linkage of the machine and showing the mechanism by which tape feeding control by the universal bars is modified by action of the shift keys.

' Fig. 30 is a'left-side elevation, partly in section. showing the means by which the type keys and space bar control the printing and tape feeding mechanism and showing detailsof the mechanism.

Fig. 25, is anenlargedfragmentary elevational Fig. 31 is a detail of linkage for the tape feeding mechanism, which is hidden in Fig. 30.

Fig. 32 is a schematic illustration of the essential structure of the tape feed controlling universal bails of Fig. 30.

Fig. 33 is a detail view of a portion of the shift key li'nkagelshown in 29 'Fw'hlelliy a dst' motion i's'avoidedi Fig. 34 is a rear elevation of the mechanism for shifting the bails by operation of'the shift key 35 is a top. plan view of the mechanism r 34- Fig; 3.6 is an end. elevation of the mechanism show in Fig 35.

Fig. '37 is a right-side elevational View showing the mechanism by which the space bar controls rotation of the tape feeding shaft.

Fig 38 is an enlarged left-side elevation of mechanism for controlling rotation of the type feeding shaft.

Fig. 39 is a' top plan view of a portion of the mechanism shown in Fig. 38. 1

Fig. 40 isan enlarged sectional view of the single rotation clutch.

Fig. 41' is an elevation of the coil spring clutch engaging element.

Fig. 4g is a side elevation of the carbon ribbon supply roll holder.

Fig.'43 is a sectional view of the supply roll holdertaken in general on the line 43-43 of Fig. 42. 4

Fig. 4g is a perspective view of a carbon ribbon shield.

This typewriting machine which is adapted for the typing of characters of varying lengths suchas telegraphic code messages which do not require capitalization and some other characters of ordinary printing, has thirty keys arranged in threebanks of ten keys each. Eleven Of these keys are utilized by means of shift keys: for the typing of additional symbols.

The arrangement of the keyboard is shown diagrammatically in Fig. 4. The key levers are arranged in two groups, on opposite sides of the center of themachine, and are pivoted on an arcuate pivotbar 2 which is secured in the frame right orleftrelative to thejprinting point, at:

which the midpoint of the shuttle normally stands. The universal bar, 6 (see Fig. 3) comprises a bail-like frame pivoted on a shaft: 1'

secured in a stationary bracket 8. An upstandingf arm Bis rigidly secured to, the bar 6 and acts upon a shuttle arm In to oscillate it about a shaftl2 and position the type. shuttle I5 or [5' so that the symbol corresponding to the depressed keywill be brought to the printing point for reception of the printing hammer stroke, as hereinafter described. mechanism in arrangement is in general the same as that disclosed in the patent to Trego N0. '1,96' 7;273 of'July 24, 1934', to which reference is made for a more detailed description of this cqnventional arrangement.

While the mechanism for type selection isin The above-described generalsimilar'to that of the above-mentioned patent to Trego, the shuttle arm I hasia modified mounting in the machine which permits ready disengagement from itsconnection with either of the type shuttles I or I5. The two type shuttles I5 and I5 are mounted on a stationary circular anvil I4 supported by a fixed shaft or column I2. The column I2 rotatably mounts a. sleeve II which constitutes the pivot for oscillation of the arm In; The sleeve H is not only oscillated on' the shaft I2, but also reciprocated thereon by means of a lug or flange II. The sleeve II passes through an aperture I9 in the main frame I, which aperture has an internal circumferential groove (not'fsho-wn) 'to permit the flange II to be oscillated about the axis of the shaft I2. The aperture III also has an axial groove on one side to permit the flange II' to be reciprocated. The purpose of this modification of the type selection mechanism will be apparent from the following description.

Key shift mechanism The typing of telegraphic code symbols of the dot-and-dash character requires that the various symbols be of lengths corresponding to the groups of dots and dashes which compose them. They have, therefore, various lengths not reducible to the uniform letter spacing of ordinary typewriting machines. When embodying such type in a machine using .a type shuttle, it has been found expedient to space the type at equal angular distances on the shuttle, as is usual in the, .Varityper, and to arrange the normally longitudinal dimension of the type along vertical lines. This construction makes it impracticable to accomplish the function of shift keys by raising or lowering the shuttle axially, as hereto-- fore, to bring a different type case into position. Instead of raising or lowering the type shuttle as in the usual Varityper, first and second type shuttles I5 and I5 are made use of, which are shifted horizontally around the anvil I4, thereby removing one shuttle from the printing point and substituting theother therefor; which shifting of shuttles is accomplished through the operation of the usual shift keys.

Referring to Fig. 1, it will be seen that the shift keys 22 are provided with key levers 24, which are loosely supported on a rock shaft 25, mounted for oscillation in the sides of main frame I. The shift key levers 24 are limited in their downward movement by stop screws 26, and oscillate the shaft 25 by means of arms projecting from said shaft, each arm 21 having an engaging portion 28 extending under the shift key levers 24 so that depression of the key lever 24 oscillates the shaft 25. The shaft 25 also has an arm 29 projecting therefrom at the left side of the machine and connected with a mechanism for shifting the shuttles about the anvil I4 (see Figs. 1 and 2). The arm 29 is pivotally ocnnected by means of a link 3| (see Fig. 2) to an arm 32 projecting from a vertical rock shaft 34, which has a driving element for interchanging the first and second shuttles I5 and I5 about the anvil' I4. A conventional shift lock may be used, if desiredfto hold the left-hand shift key lever in its depressed position, thereby holding the entire shuttle-shifting mechanism in the position to which it has been moved by depression of the shift key lever 24.

The shuttles I5 and I5 (see Fig. 5), having respective fins I5 and I6 projecting from the back thereof, are positioned on the periphery of the anvil I4 with the fins lying in a circumfer ential slot I1 in anvil I4. have, on-their bottom edges, engaging means such as the lugs 35, 35' projecting downwardly. The shuttle I5 carries on its outer face the printing type for all symbols to be printed normally; that is, when the shift keys are not being used. The second shuttle I5 carries type for symbols to be printed when the shift keys are depressed.

A yoke 36 which may be formed of sheet metal (shown in Figs. 6, '7, 8 and 11) is provided for cooperation with the shuttles to accomplish the shifting operation. The yoke 35 is an arcuate member, preferably of substantially in extent, and is of such radius as to conform to the periphery of the circular anvil I 4, about the center of which it oscillates. An arm 3'1 (see Fig. 11) of the yoke 36 extends parallel to and spaced slightly from the middle radius of the yoke 36 and has at one side an enlarged rounded portion 38 concentric with the yoke. The enlarged portion 38 has an elongated opening 45 therein at the center of the yoke 36. The longer diameter of the opening 40 coincides with the line joining the extremities of the yoke 36, and the shorter diameter is perpendicular thereto, passing through the center of the yoke. Upstanding lugs 4I project from the edge of the opening 40 at the terminals of the shorter diameter and are apertured for the reception of pivot pins 42. The arm 31 is offset from the plane of the yoke 36 by an angular portion 44 so that the axes of pins 42 coincide and lie in the plane of the upper surface of the yoke 38 (see Figs. 8 and 9). The arm 31 has an extension 43 projecting beyond the enlarged portion 38. A pinion 48 (see Figs. 5, 6 and 7) is mounted in lugs M of the yoke 35 by means of the pins 42 and has a [central bore for the reception of the shaft I2 upon which it is adapted to oscillate and reciprocate, thereby oscillating and reciprocating the yoke 35. The yoke Efiis provided with tongues 47 and 4"!" which extend inwardly and upwardly (see Figs. 5 and 7).

Projections 45 and 45 are formed at the ends of the yoke 36, extend outward, and have suitable means for engaging the shuttles I5 and I5, such as apertures 46 and 46', to receive lugs 35 and 35' on the bottom edges of shuttles I5 and I5. As shown in Fig. 5, the projection 45 is in engagement with the lug 35 of shuttle l5, which lug extends into the aperture 46, While the projection 45 is shown disengaged from the lug 35,

. the yoke having a slightly tilted position relative to anvil I4. Engagement of the projection 45' with the lug 35 of the second shuttle I5 serves to retain that shuttle in the fixed position on anvil I4, while the first shuttle I5 is free to be moved about the anvil I4 within a limited arcuate range under control of the key levers 24 and the shuttle arm III to bring the selected type to the printing point. Thus, the shuttle I5, in its normal position, is free to be moved to the right and left about the axis of the anvil I4 while the shuttle I5 is immovably locked in position by the engagement of the yoke 36 with the shuttle I5.

The pinion 48, which is connected to the yoke 36, can oscillate only within the limitation imposed by that yoke, 180 in the form shown. To

produce that oscillation, a segment sleeve 50 (Fig. 6) is journaled on a stub shaft 5| secured in the underside of a fixed cross arm I8, and carries a segment gear 52, which meshes with the pinion 48. As shown in Figs. 6, 10 and 11, a cam fork Both of the shuttles 

